Spring3 Web MVC 集成JasperReport生成PDF例子

一：环境搭建与配置

1.      安装JDK6以上版本

2.      安装STS, 下载地址如下：http://www.springsource.org/downloads/sts-ggts

3.      下载并安装Tomcat7

4.      创建一个Dynamic Web Project项目，然后选择创建好的项目右键选择

Configuration->convert to Manve Project.

5.      添加web.xml文件，在WEB-INF目录下新建reports, pages, classes三个子目录

6.      新建index.jsp文件在webapp目录下。

7.      最终的项目目录结构如下：

二：Spring配置详解

在web.xml中配置Spring的DispatchServlet与Context Listener，配置如下：

在express-servlet.xml中配置spring view解析器

三：Jasper Report配置详解

在jasper-views.xml添加如下配置

四：Report内容与数据源

两个报表，演示了子报表的用法，同时还演示了如何想子报表传递数据源，以及参

数传递在报表中显示图像等技巧。需要特别说明的是如果要在报表中使用图像路径

图像必须位于WEB-INF/classes下面，因为JasperReport解析是按找类路径寻找。关

于报表的详细内容建议查看下载以后的源文件，此处不再细说。

五：Controller与注解

Spring3 Controller支持注解(annotation)方式，使用非常方便，生成PDF报表的

Controller代码如下：

package com.gloomyfish.express.controllers;    import java.util.HashMap;  import java.util.Map;    import net.sf.jasperreports.engine.JRDataSource;  import net.sf.jasperreports.engine.JREmptyDataSource;    import org.apache.log4j.Logger;  import org.springframework.stereotype.Controller;  import org.springframework.web.bind.annotation.RequestMapping;  import org.springframework.web.bind.annotation.RequestMethod;  import org.springframework.web.servlet.ModelAndView;    import com.gloomyfish.report.dao.MockDataFactory;    @Controller  public class JasperReportController {      protected static Logger logger = Logger.getLogger("controller");         /**       * Retrieves the PDF report file       *        * @return       */      @RequestMapping(value = "/getpdfReport", method = RequestMethod.GET)      public ModelAndView doSalesReportPDF(ModelAndView modelAndView)      {    logger.debug("Received request to download PDF report");        // Retrieve our data from a mock data provider    MockDataFactory dataprovider = new MockDataFactory();        // Assign the datasource to an instance of JRDataSource    // JRDataSource is the datasource that Jasper understands    // This is basically a wrapper to Java's collection classes    JRDataSource categoryData  = dataprovider.getCategoriesData();      // parameterMap is the Model of our application    Map parameterMap = new HashMap();        // must have the empty data source!!!    JREmptyDataSource emptyData = new JREmptyDataSource();    parameterMap.put("datasource", emptyData);    parameterMap.put("JasperfishSubReportDatasource", categoryData);    parameterMap.put("JasperfishSummaryInfo", dataprovider.getSummaryInfo());        // pdfReport is the View of our application    // This is declared inside the /WEB-INF/jasper-views.xml    modelAndView = new ModelAndView("pdfReport", parameterMap);        // Return the View and the Model combined    return modelAndView;   }  }

Mock数据工厂代码如下：

package com.gloomyfish.report.dao;    import java.text.SimpleDateFormat;  import java.util.ArrayList;  import java.util.Date;  import java.util.List;    import net.sf.jasperreports.engine.JRDataSource;  import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;    public class MockDataFactory {      public MockDataFactory()   {    System.out.println("create mock up data");   }      public GloomyFishSummaryInfoBean getSummaryInfo()   {    GloomyFishSummaryInfoBean summaryBean = new GloomyFishSummaryInfoBean();    summaryBean.setBlogURL("http://blog.csdn.net/jia20003");    summaryBean.setMajorDomain("J2SE, J2EE, WEB developer");    summaryBean.setName("jia20003");    summaryBean.setNickName("gloomyfish");    summaryBean.setRegDate("2003-03-02");    summaryBean.setWorkYears(8);    return summaryBean;   }      public JRDataSource getCategoriesData()   {    List listData = new ArrayList();    SimpleDateFormat sdf = new SimpleDateFormat("dd MMM yyyy, hh:mm:ss");    Date createDte = new Date();    ArticlesCategory category1 = new ArticlesCategory();    ArticlesCategory category2 = new ArticlesCategory();    ArticlesCategory category3 = new ArticlesCategory();    ArticlesCategory category4 = new ArticlesCategory();    ArticlesCategory category5 = new ArticlesCategory();    ArticlesCategory category6 = new ArticlesCategory();  //  ArticlesCategory category7 = new ArticlesCategory();  //  ArticlesCategory category8 = new ArticlesCategory();  //  ArticlesCategory category9 = new ArticlesCategory();  //  ArticlesCategory categoryTen = new ArticlesCategory();    category1.setCategoryName("Android Development");    category1.setCount(6);    category1.setCreateDate(sdf.format(createDte));    category2.setCategoryName("Swing Desktop Development");    category2.setCount(21);    category2.setCreateDate(sdf.format(createDte));    category3.setCategoryName("JAVA 2D Image Process");    category3.setCount(56);    category3.setCreateDate(sdf.format(createDte));    category4.setCategoryName("J2EE");    category4.setCount(8);    category4.setCreateDate(sdf.format(createDte));    category5.setCategoryName("HTML5");    category5.setCount(4);    category5.setCreateDate(sdf.format(createDte));    category6.setCategoryName("Network Protocols Research");    category6.setCount(4);    category6.setCreateDate(sdf.format(createDte));    category6.setCategoryName("ExtJS Learning");    category6.setCount(2);    category6.setCreateDate(sdf.format(createDte));    listData.add(category1);    listData.add(category2);    listData.add(category3);    listData.add(category4);    listData.add(category5);    listData.add(category6);    JRBeanCollectionDataSource data = new JRBeanCollectionDataSource(listData);    return data;   }    }

启动运行在浏览器中访问地址为：http://localhost:8080/express/hello.html

六：Deploy与运行

全部代码完成以后，从IDE中运行Maven的clean与install命令，得到war包

将war拷贝到tomcat的webapps下面即可启动tomcat然后从浏览器访问。

点击[Get PDF Report]会自动在新窗口中打开生成的PDF报表文件。

程序运行打开主页面结果如下：

获取PDF报表在浏览器中打开以后效果如下：

七：常见问题

1.      必须在applicationContext.xml中导入jasper-views.xml资源否则报表不会被编译

          为jasper文件

2.      Web.xml的servlet名必须与spring的xxx-servlet.xml中的xxx一致

3.      Jasper-views.xml中声明的子报表路径参数与数据参数必须与报表文件jrxml中保

         持一致

4.      报表中field变量名必须与Java Class中的field变量名一一对应。

 

八：项目文件打包下载，解压缩作为Maven项目导入以后运行clean与 install命令。

来自：http://blog.csdn.net/jia20003/article/details/8471169